CVE-2020-11444 Nexus Repository Manager 3 - Improper Access Controls - 2020-04-02

Sonatype Repository Manager 3 Security Advisory

Date:  April 2nd, 2020

Affected Versions:  All previous Nexus Repository 3 OSS/Pro versions up to and including 3.21.2

Fixed in Version:  Nexus Repository OSS/Pro version 3.22.0

Risk: High - 7.1 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L)


Improper access controls have been discovered in Nexus Repository 3.

An authenticated user can craft requests in such a manner that configuration for other users in the system can be affected. We have mitigated the issue by implementing the necessary access controls. This advisory provides the pertinent information needed to properly address this vulnerability, along with the details on how to reach us if you have any further questions or concerns.

This vulnerability was identified by an external researcher and has been verified by our security team. We are not aware of any active exploits taking advantage of this issue. However, we strongly encourage all users of NXRM 3 to immediately take the steps outlined in this advisory.

We are highly recommending all instances of NXRM be upgraded to version 3.22.0 or later. The latest version of NXRM 3.x can be downloaded from:

For detailed information on upgrade compatibility, please see:


Sonatype thanks David Lindner (@golfhackerdave) for responsibly reporting the identified issues and working with us as we addressed them.


If you run into any problems, or have any questions/concerns, please contact us by filing a ticket at

Frequently Asked Questions:

Q:  What is the risk associated with this vulnerability?

A:  An attacker can craft certain requests that will allow the user to change configuration for other users in the system.


Q: What preconditions must be met in order to be vulnerable?

A: A user must be granted a certain privilege, anonymous users cannot exploit this vulnerability.


Q: Are there implications associated with this advisory itself?

A: Disclosure unfortunately means bad actors may try to take advantage.  While we have initially limited the information to the minimum details necessary for users to affect an appropriate fix, this merely slows down a would be attacker.  As such, we are advising all organizations utilizing Nexus Repository Manager to immediately assess their individual impact and take appropriate action in response.


Q:  Where can I obtain more information associated with the vulnerability?

A:  At this time, and in the interest of best protecting our user community, we are limiting the information released to that absolutely required in order to assess impact and affect remediation. Please contact support for more information.


Q:  Why is Sonatype making this information available?

A:  This is part of a responsible disclosure process.  Given Nexus Repository Manager is an open source project with over 150,000 active server installations, notifying the user base will invariably lead to broad dissemination.  We are taking a concerted and proactive approach in our outreach activities and an effort to achieve the most rapid remediation possible.

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